Apollo Command Module GSE (Ground Systems Equipment) pressure relief valve, measuring 4″ x 2″ x 1.75″, marked on the body: "Valve, Press. Relief, ME284-0382-0001, NAS9-150…Vacco Valves…Ser. No. 28774-3, Assy. Date 2Q71, Cure Date 1Q71." The end of the valve is marked with arrows to indicate the direction of flow. In fine condition.
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